Average Co-Inventor Count = 1.50
ph-index = 2
The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.
Company Filing History:
1. Kabushiki Kaisha Ohara Kogaku Garasu Seizosho (1 from 7 patents)
2. Kabushika Kaisha Ohara Kogaku Garasu Seizosho (1 from 1 patent)
2 patents:
1. 4358543 - Fluoride glass
2. 4111707 - Optical glass